As the speed of change in the marketing environment quickens, time horizons are becoming shorter. Nevertheless, most firms carry out strategic planning every 3– 5 years and treat the process as a means of checking whether the company is on track to achieve its vision and mission. Ideally, strategies are both dynamic and interactive, partially planned and partially unplanned. Strategies are broad in their scope in order to enable a firm to react to unforeseen developments while trying to keep focused on a specific pathway. A key aspect of marketing strategy is to keep marketing consistent with a company's overarching mission statement.
Barney stated that for resources to hold potential as sources of sustainable competitive advantage, they should be valuable, rare and imperfectly imitable. A key insight arising from the resource-based view is that not all resources are of equal importance nor possess the potential to become a source of sustainable competitive advantage. The sustainability of any competitive advantage depends on the extent to which resources can be imitated or substituted. Barney and others point out that understanding the causal relationship between the sources of advantage and successful strategies can be very difficult in practice. Barney uses the term "causally ambiguous" which he describes as a situation when "the link between the resources controlled by the firm and the firm's sustained competitive advantage is not understood or understood only very imperfectly." Thus, a great deal of managerial effort must be invested in identifying, understanding and classifying core competencies. In addition, management must invest in organisational learning to develop and maintain key resources and competencies.
Strategic planning focuses on the 3C's, namely: Customer, Corporation and Competitors. A detailed analysis of each factor is key to the success of strategy formulation. The 'competitors' element refers to an analysis of the strengths of the business relative to close rivals, and a consideration of competitive threats that might impinge on the business' ability to move in certain directions. The 'customer' element refers to an analysis of any possible changes in customer preferences that potentially give rise to new business opportunities. The 'corporation' element refers to a detailed analysis of the company's internal capabilities and its readiness to leverage market-based opportunities or its vulnerability to external threats.
During decline, demand for a good begins to taper off, and the firm may opt to discontinue the manufacture of the product. This is so, if revenue for the product comes from efficiency savings in production, over actual sales of a good/service. However, if a product services a niche market, or is complementary to another product, it may continue the manufacture of the product, despite a low level of sales/revenue being accrued. 
Point-of-purchase marketing strategy includes placing your product where customers make the most purchase. You must have noticed that many small products are being placed near the cash counter. This is done intentionally so that people make an impulse purchase. In addition to this, you must have experienced cashier who tried to sell your product. This is another example of POP marketing.
PPC advertising enables marketers to reach Internet users on a number of digital platforms through paid ads. Marketers can set up PPC campaigns on Google, Bing, LinkedIn, Twitter, Pinterest, or Facebook and show their ads to people searching for terms related to the products or services. PPC campaigns can segment users based on their demographic characteristics (such as by age or gender), or even target their particular interests or location. The most popular PPC platforms are Google Ads and Facebook Ads.
With offline marketing, it's very difficult to tell how people are interacting with your brand before they have an interaction with a salesperson or make a purchase. With digital marketing, you can identify trends and patterns in people's behavior before they've reached the final stage in their buyer's journey, meaning you can make more informed decisions about how to attract them to your website right at the top of the marketing funnel.
Email marketing - Email marketing in comparison to other forms of digital marketing is considered cheap; it is also a way to rapidly communicate a message such as their value proposition to existing or potential customers. Yet this channel of communication may be perceived by recipients to be bothersome and irritating especially to new or potential customers, therefore the success of email marketing is reliant on the language and visual appeal applied. In terms of visual appeal, there are indications that using graphics/visuals that are relevant to the message which is attempting to be sent, yet less visual graphics to be applied with initial emails are more effective in-turn creating a relatively personal feel to the email. In terms of language, the style is the main factor in determining how captivating the email is. Using casual tone invokes a warmer and gentle and inviting feel to the email in comparison to a formal style. For combinations; it's suggested that to maximize effectiveness; using no graphics/visual alongside casual language. In contrast using no visual appeal and a formal language style is seen as the least effective method. A DAY IN THE LIFE OF A DIGITAL MARKETING MANAGER | WHAT DOES A DIGITAL MARKETER DO? & SALARIES